Diaphragm for pressure-controlling devices



' W. L. HAMILTON.

DIAPHRAGM FOR PRESSURE CONTROLLING DEVICES. man 02c. 5. 1919.

lNl/E/V TOR MZZMMZ, MAI/170m WITNESSES Patented Feb. 27, 1923.

UNITED STATES PATENT OFFICE.

7 WILLIAM L. HAMILTON, OF BANGOR, MICHIGAN. BIA-P8346! FOB PRESSURE-CONTROLLING DEVICES. Application filed December 5, 1918. Serial No; 842,610.

To all whom it may concern:

Be it known that I, WILLIAM L. HAMIL- TON, a citizen of the United States, and a resident of Bangor in the county of Van Buren and State of ichigan, have invented a new and Improved Diaphra for Pressure-Controlling Devices, of w ich the 'following is a full, clear, and exact description. The object of the invention is to provide a new and improved diaphra for pressure controlling devices .arranged to provide an exceedingly large throw with a view torender the pressure controllingdevice exceedingly sensitive to riations in the pressure. a

Another object is to provide a diaphra which is exceedingly sim le and durable in construction and not liable to get out of order easily.

With these and other objects in view, the invention consists of certam novel features of construction,

in the claims.

practical embodiment of the invention is represented in accompanying drawings forming a art of this specification, in which similar 0 aracters of reference indicate corresponding arts in all the views.

igure 1 is a si e elevation of the improved diaphragm as applied to an automatic pressure operated switch shown in section, and such, for instance, as illustrated and described in the application for Letters Patent, Serial No. 253,489, filed by me on September 10, 1918;

Figure 2 is a sectional plan view of the same on the line 2-2 of Figure 1; and Figure 3 is a cross section of the same on the line 3-3 of Fi The improved diaphragm is shown ap-' plied to a pressure operated switch having a support 10, a lever 11 pressed on by a spring 12 and connected by a sprin 13 with the movable member 14 of a kni mounted on the support 10. The diaphragm shown in Figure 1 comprises a plurality of diaphragm chambers, for instance, two chambers 20 and 21 each formed of an annular member 22 and top and bottom diaphragms 23 and 24 having their curved edges soldered or otherwise secured to the annular member 22. The bottom diahragm 23 of the lower diaphragm chamber 20 rests on a projection 25 forming part of the support 10, interposed between and the diaphragm chamber-21 is readily respond to the vaas hereinafter shown and described and then specifically pointed out the top diaphra 23 of the dia hra chamber 20 and tl u e bottom diaphrag dnf23 d i interposed a disk 26, and a similar disk 27 rests on the top diaphragm 23 of the diaphragm cham- This disk 27 is engaged by lugs 28 dependin from the lever 11 previous] mentioned. he lower diaphragm cham er 20 is connected with one end 30 of a flexible tube 31 having its other end 32 engaging a nipple 33 screwed or otherwise fastened to the support 10 and connected with a source of fluid pressure supply such, for instance, as a reservoir containing compressed air or other fluid under pressure'pumped into the reservoir by a pump actuated byan electric motor. The flexible tube 31, after leaving the nipple 33 is formed into a coil surrounding the annular member 22 of the diaphragm chamber 20,andthe end 30 of the flexible tube is connected with the annular member 22 and opens into the chamber. The other diaphragm member 21 is connected at its annular member 22 with one end 34 of a flexible tube 35 having'its otherend 36 an aging regulated valves and other pressure controlled devices, and it is also understood that I do not limit myself to the number of diahragm chambers used, as more such chamhers or only a single one may be employed.

It will be noticed that by connecting the flexible tube with the peripheral or annular member 22 of the corresponding diaphragm chamber the action of the top and bottom diaphragms 23 and 24 is not impeded in the least.

By using the diaphragm on an automatic pressure operated switch such, for instance, as shown and described in the application above referred to, the bonnet 40 can now be formed as an integral part of the support 10, instead of being bolted to the support to fasten the usual disk diaphragm in place as shown in said application.

=flexible top and bottomof one'of the said chambers top connected with ithe said chamb'ers'and con-s 'nected with a source of pressure supply.

Having thus described my invention, I claim as new and desire to secure by Letters Patent 1. A diaphragm for pressure regulators and other devices, comprising a plurality of closed diaphragm chambers and a flexible tube connected with each chamber and connected with a source of pressure supply to subject the diaphragm chambers simultaneouslyto the same pressure.

2. A diaphragm for pressure regulators and other devices,=comprising a plurality of closed diaphragm chambers each having bottom diaphragms, and flexible =tubes connected with a source of the said he latter being adapted to act 3. A diapl'u agm for pressure regulators and other=devices, comprising a plurality oi" closed chambers, each having a flexible top anda flexible bottorma solid support for'the to rest on, a solid-member interposed between the chambers, and asolid top member on the of the other chaniber and flexible tubes A. A diaphragm for pressure regulators and other devices, comprising a plurality of iclosed, chambers each having a flexible top iandia vflexible bottom, a solid support for the bottom of one of the said chambers to :rest on, asolid -member interposed be- 'be actuated,

bottom member rests,

tween the chambers, and a solid top member on the top of the other chamber and adapted to be engaged by the part of the regulator to flexible tubes connected at one end with the said chambers and a nipple engaging the other ends of the said tubes and adapted to connect with a source of pressure supply.

5. diaphragm for pressure regulators and other devices,

comprislng an annular member, flexible top and bottom members attached to the said annular member and forming with the same a closedzchamber, a rigid support tor-the chamber on which said and a flexible tube connected atone end to the said annular member, the it other end of the tube being secured to a'fiz ied support and adapted to connect with a source of pressure supply.

. 6. A diaphragm tor pressure regulators and other devices, comprising an annular member, fiexible top and bottom members attached to the said annular member and forming With the same a closed chamber, a rigid support for the chamber on which said bottom member rests, and a tube formed into a coil encircling the said annular member, one end of the coil being secured to a fixed support and the other end being attached to the said annularmember and opening into the chamber formed by the said annular member and the said fiexible'topand bottom members.

WILLIAM L. I'LXMILTON. 

